strip-json-comments.js

/*!
	strip-json-comments
	Strip comments from JSON. Lets you use comments in your JSON files!
	https://github.com/sindresorhus/strip-json-comments
	by Sindre Sorhus
	MIT License
*/
(function () {
	'use strict';

	function stripJsonComments(str) {
		var currentChar;
		var nextChar;
		var insideString = false;
		var insideComment = false;
		var ret = '';

		for (var i = 0; i < str.length; i++) {
			currentChar = str[i];
			nextChar = str[i + 1];

			if (!insideComment && str[i - 1] !== '\\' && currentChar === '"') {
				insideString = !insideString;
			}

			if (insideString) {
				ret += currentChar;
				continue;
			}

			if (!insideComment && currentChar + nextChar === '//') {
				insideComment = 'single';
				i++;
			} else if (insideComment === 'single' && currentChar + nextChar === '\r\n') {
				insideComment = false;
				i++;
			} else if (insideComment === 'single' && currentChar === '\n') {
				insideComment = false;
			} else if (!insideComment && currentChar + nextChar === '/*') {
				insideComment = 'multi';
				i++;
				continue;
			} else if (insideComment === 'multi' && currentChar + nextChar === '*/') {
				insideComment = false;
				i++;
				continue;
			}

			if (insideComment) {
				continue;
			}

			ret += currentChar;
		}

		return ret;
	}

	if (typeof module !== 'undefined' && module.exports) {
		module.exports = stripJsonComments;
	} else {
		window.stripJsonComments = stripJsonComments;
	}
})();